Celico, F., Petrella, E., Allocca, V., Marotta, S., Nerone, V., Marzullo, G. and Naclerio, G. 2008. Protection of carbonate aquifers against microbial pollution. Italian journal of engineering geology and environment. (Oct. 2008), 57–65. DOI:https://doi.org/10.4408/IJEGE.2008-01.S-04.